Hoa, Phung, Trang, Nguyen, Anh, Nguyen, Phong, Pham, AND Ky, Nguyen. " A Challenging Classic Coupling: Esterification of Camphoric Acid - a Steric - Hindered Polar Carboxylic Acid and Solanesol - a Long - Chain Nonpolar Alcohol." VNU Journal of Science: Natural Sciences and Technology [Online], Volume 32 Number 4 (15 December 2016)